WO2017190294A1 - 一种基于授权辅助接入laa系统的上行传输方法及装置 - Google Patents

一种基于授权辅助接入laa系统的上行传输方法及装置 Download PDF

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Publication number
WO2017190294A1
WO2017190294A1 PCT/CN2016/081001 CN2016081001W WO2017190294A1 WO 2017190294 A1 WO2017190294 A1 WO 2017190294A1 CN 2016081001 W CN2016081001 W CN 2016081001W WO 2017190294 A1 WO2017190294 A1 WO 2017190294A1
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WO
WIPO (PCT)
Prior art keywords
reserved
subframe
symbol
transport block
fdma symbol
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PCT/CN2016/081001
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English (en)
French (fr)
Chinese (zh)
Inventor
徐凯
李晓翠
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华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to RU2018141587A priority Critical patent/RU2696089C1/ru
Priority to JP2018557890A priority patent/JP2019515569A/ja
Priority to PCT/CN2016/081001 priority patent/WO2017190294A1/zh
Priority to KR1020187034534A priority patent/KR20190002625A/ko
Priority to CA3023180A priority patent/CA3023180A1/en
Priority to EP16900816.6A priority patent/EP3445079B1/en
Priority to CN201680085355.2A priority patent/CN109076350B/zh
Priority to AU2016405421A priority patent/AU2016405421A1/en
Priority to US16/099,001 priority patent/US11071142B2/en
Priority to BR112018072710A priority patent/BR112018072710A2/pt
Publication of WO2017190294A1 publication Critical patent/WO2017190294A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0808—Non-scheduled access, e.g. ALOHA using carrier sensing, e.g. carrier sense multiple access [CSMA]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2626—Arrangements specific to the transmitter only
    • H04L27/2627—Modulators
    • H04L27/2634—Inverse fast Fourier transform [IFFT] or inverse discrete Fourier transform [IDFT] modulators in combination with other circuits for modulation
    • H04L27/2636—Inverse fast Fourier transform [IFFT] or inverse discrete Fourier transform [IDFT] modulators in combination with other circuits for modulation with FFT or DFT modulators, e.g. standard single-carrier frequency-division multiple access [SC-FDMA] transmitter or DFT spread orthogonal frequency division multiplexing [DFT-SOFDM]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/14—Spectrum sharing arrangements between different networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
    • H04W28/26—Resource reservation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H04W72/1263—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows
    • H04W72/1268—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows of uplink data flows
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to an uplink transmission method and apparatus based on an authorized auxiliary access LAA system.
  • LAA Licensed-Assisted Access Using Long Term Evolution
  • LAA is part of the 3GPP LTE Advanced Pro Release 13 specification.
  • LAA refers to the use of LTE network technology in unlicensed frequency bands.
  • the licensed band carrier is used as the primary cell (PCell), and the unlicensed band carrier can only be used as the secondary cell (SCell).
  • SCell secondary cell
  • LBT Listen-Before-Talk
  • LBT is a Carrier Sense Multiple Access (CSMA) technology.
  • multiple User Equipments can perform uplink multiplexing (Multiplex).
  • Multiplex uplink multiplexing
  • An embodiment of the present invention provides an uplink transmission method and device based on an authorized auxiliary access LAA system, which can reserve a time gap for accessing a channel through an LBT for other UEs in an uplink transport block, and improve successful access of other UEs.
  • the probability of the channel enables multiple user equipments in the LAA communication system to perform uplink multiplexing.
  • an uplink transmission method based on an authorized auxiliary access LAA system including: For a transport block transmitted on the unlicensed carrier, at least one SC-FDMA symbol is reserved in a subframe of the uplink transport block corresponding to the transport block; wherein the at least one SC-FDMA is reserved In the symbol, the user equipment accesses the channel by listening to the LBT access mechanism.
  • At least one SC-FDMA symbol may be reserved at a start position and/or an end position of each subframe of the uplink transport block.
  • a time gap through the LBT access channel is reserved for other UEs at the start and/or end positions of each subframe, so that uplink multiplexing of multiple UEs can be achieved.
  • At least one SC-FDMA symbol may be reserved periodically at a start position and/or an end position of a partial subframe of the uplink transport block.
  • the time gap through the LBT access channel is reserved for other UEs at the beginning and/or the end position of the partial subframe of the uplink transport block periodically, so that uplink multiplexing of multiple UEs can be implemented.
  • At least one SC-FDMA symbol may be reserved at a start position and/or an end position of a designated subframe of the uplink transport block.
  • the at least one SC-FDMA symbol may be a low power transmit symbol. Part of the frequency resource on the low power transmission symbol involved in the embodiment of the present invention is allowed to be occupied. Moreover, on the unoccupied frequency resource of the ABS symbol, the user equipment can access the channel by listening to the LBT access mechanism. In this way, the WiFi access point can be prevented from accessing the idle channel through the LBT on the reserved at least one SC-FDMA symbol, so that the user equipment of the LAA-LTE cannot successfully access the channel (or reduce the LAA-LTE user). The probability of successful access to the device).
  • ETSI European Telecommunications Standards Institute
  • ETSI European Telecommunications Standards Institute
  • the low power transmit symbols allow the occupied frequencies to be distributed across resource blocks across the entire system bandwidth.
  • the reserved at least one SC-FDMA symbol may be configured by using a high-level configuration signaling (for example, RRC signaling), a physical downlink control channel (PDCCH), or the like, and specifically includes at least one of the following Item: the number of the reserved SC-FDMA symbols, the position of the reserved SC-FDMA symbol in the subframe, the type of the reserved SC-FDMA symbol, the pre- The period of the SC-FDMA symbol left and the offset.
  • a high-level configuration signaling for example, RRC signaling
  • PDCCH physical downlink control channel
  • the subframe including the reserved SC-FDMA symbol may be configured by using a high-level configuration signaling (for example, RRC signaling), a physical downlink control channel (PDCCH), or the like, and specifically includes the following At least one item: a number of subframes including the reserved SC-FDMA symbol, a position of the subframe including the reserved SC-FDMA symbol in an uplink transport block, and the reserved The period of the subframe of the SC-FDMA symbol and the offset.
  • a high-level configuration signaling for example, RRC signaling
  • PDCCH physical downlink control channel
  • a communication network apparatus comprising: a memory and a processor coupled to the memory, wherein: the memory is for storing implementation code of a method described in the first aspect, the processor is configured to execute The program code stored in the memory, that is, the uplink transmission method based on the authorization assisted access LAA system described in the first aspect.
  • a communication network apparatus comprising means for performing the method of the first aspect.
  • Embodiments of the present invention by reserving at least one SC-FDMA symbol in a subframe of an uplink transport block, wherein, on the reserved at least one SC-FDMA symbol, the user equipment may
  • the access mechanism of the LBT access channel can reserve the time gap for accessing the channel through the LBT for other UEs in the uplink transport block, and improve the probability of other UEs successfully accessing the channel, so that multiple users in the LAA communication system
  • the device is capable of upstream multiplexing.
  • FIG. 1 is a schematic diagram of an application scenario according to an embodiment of the present invention.
  • FIG. 2 is a schematic diagram of an LBT access mechanism after listening to the first embodiment of the present invention
  • 3A-3C are schematic diagrams of several methods for reserving SC-FDMA symbols according to an embodiment of the present invention.
  • FIG. 4 is a schematic diagram of an LBT access mechanism after a listener in a LAA and Wi-Fi coexistence scenario according to an embodiment of the present invention
  • FIG. 5 is a schematic diagram of frequency domain characteristics of a low power transmission symbol according to an embodiment of the present invention.
  • FIG. 6 is a schematic structural diagram of a communication network apparatus according to an embodiment of the present invention.
  • the LBT access mechanism is: in the LAA communication system, a node (for example, UE2) monitors whether the channel is idle before sending data every time, if the channel is not If it is idle (ie, Clear Channel Assessment (CCA) fails), then it will not access the channel (ie, send data), and wait for a while before attempting to access. That is to say, the node can access the channel only when the channel is idle (ie, the idle channel evaluates the CCA success), thereby avoiding interrupting the ongoing transmission process of other nodes.
  • CCA Clear Channel Assessment
  • FIG. 2 is only an example for assisting in explaining the embodiments of the present invention and should not be construed as limiting.
  • the LAA communication system may include 2 or more communication nodes (not limited to UE1 and UE2 in FIG. 2).
  • An embodiment of the present invention provides an uplink transmission method and device based on an authorized auxiliary access LAA system, which can reserve a time gap for accessing a channel through an LBT for other UEs in an uplink transport block, and improve successful access of other UEs.
  • the probability of the channel enables multiple user equipments in the LAA communication system to perform uplink multiplexing.
  • the main inventive concept of the solution of the present invention includes: for one transport block transmitted on the unlicensed carrier, at least one SC-FDMA symbol is reserved in a subframe of the uplink transport block corresponding to the transport block; wherein, in the reserved On the at least one SC-FDMA symbol, the user equipment accesses the channel by listening to the LBT access mechanism. Thus, on the reserved at least one SC-FDMA symbol, the channel is in an idle state, and other UEs can access the channel through the LBT.
  • a transport block may include a downlink transport block and an uplink transport block, wherein each downlink transport block is preceded by a downlink idle channel assessment (CCA for DL), a downlink transport block, and The uplink transport block is separated by an uplink idle channel assessment (CCA for UL) and an uplink downlink-to-uplink switching (Downlink-to-Uplink switching).
  • CCA downlink idle channel assessment
  • UL uplink idle channel assessment
  • Downlink-to-Uplink switching Downlink-to-Uplink switching
  • an uplink transmission burst refers to a time-continuous transmission from a user equipment
  • a DL transmission burst refers to a time from a downlink transmission node (such as a base station).
  • a downlink transmission node such as a base station.
  • One continuous transmission Downlink block and upstream
  • the number of subframes included in the input block is not limited by the figure.
  • the uplink and downlink transport blocks please refer to the description in the protocol 3GPP TR 36.889, which is not described here.
  • FIG. 3A-3C respectively show several methods for reserving symbols provided by an embodiment of the present invention. among them:
  • At least one SC-FDMA symbol may be reserved at a start position and/or an end position of each subframe of the uplink transport block.
  • a time gap through the LBT access channel is reserved for other UEs at the start and/or end positions of each subframe, so that uplink multiplexing of multiple UEs can be achieved.
  • the "and/or” may include the following cases: SC-FDMA symbols are reserved at the beginning position of each subframe, and SC-FDMA symbols are reserved at the end position of each subframe, at each SC-FDMA symbols are reserved at the beginning and end of a subframe.
  • the first subframe of the uplink transport block (such as the subframe N+4 in the figure) has a channel access operation (such as CCA for UL)
  • the first subframe of the uplink transport block (such as the subframe N+4 in the figure) has a channel access operation (such as CCA for UL)
  • the first subframe of the uplink transport block (such as the subframe N+4 in the figure) has a channel access operation (such as CCA for UL)
  • the first subframe of the uplink transport block (such as the subframe N+4 in the figure) has a channel access operation (such as CCA for UL)
  • the reserved at least one SC-FDMA symbol does not include the SC-FDMA symbol at the beginning of the first subframe of the uplink transport block.
  • the end position of the last subframe is not required.
  • the SC-FDMA symbol is reserved. That is to say, the reserved at least one SC-FDMA symbol does not include: the SC-FDMA symbol at the end position of the last subframe of the uplink transport block.
  • different numbers of SC-FDMA symbols may be reserved corresponding according to access times required by different channel access schemes.
  • a fast channel access scheme is: an uplink LBT access scheme that can directly access the channel only needs to detect that the channel idle is greater than or equal to 25 ⁇ s.
  • the access time required by the fast channel access scheme is relatively short (equal to or slightly larger than 25 ⁇ s), and the access time required by the Category-4 based uplink LBT access mode is relatively long.
  • An access scheme may reserve an SC-FDMA symbol at a start or end position of each subframe of the uplink transport block; if a Category 4 based uplink LBT access scheme is adopted, the uplink may be Two SC-FDMA symbols are reserved at the beginning or end of each subframe of the transport block.
  • the example is only one embodiment of the embodiment of the present invention, and may be different in practical applications, and should not be construed as limiting.
  • the number of reserved SC-FDMA symbols is not limited. In specific implementation, the number of SC-FDMA symbols that need to be reserved may be determined according to actual application requirements.
  • At least one SC-FDMA symbol may be reserved periodically at a start position and/or an end position of a partial subframe of the uplink transport block.
  • the time gap through the LBT access channel is reserved for other UEs at the beginning and/or the end position of the partial subframe of the uplink transport block periodically, so that uplink multiplexing of multiple UEs can be implemented.
  • the period T of the reserved symbol is equal to 2 subframes, that is, the symbol reservation is performed once every 2 subframes, that is, the subframe N+4, the subframe N+6, and the subframe N can be selected.
  • SC-FDMA symbols are reserved in +8 respectively.
  • the example is only one implementation of the embodiment of the present invention. In an actual application, the period of the reserved symbol may also be other values, which is not limited herein.
  • the period T of the reserved symbols can also be represented by symbols.
  • the period T of the reserved symbol is equal to 2 subframes and 1 subframe contains N (N is a positive integer) symbols
  • the period T of the reserved symbols may also be represented as 2*N symbols.
  • a preset offset delta may be provided between periods of two adjacent reserved symbols.
  • the period T of the reserved symbol is equal to 2, and the preset offset delta is equal to +1 subframe, then, in the subframe N+4, the subframe N+6, the subframe N+9, the sub-frame
  • the SC-FDMA symbol is reserved at the beginning of the frame N+13, that is, every other period T, the subframe reserved symbol is shifted back in time.
  • the period T of the reserved symbol is equal to 3
  • the preset offset delta is equal to -1 subframe, then, in subframe N+4, subframe N+7, subframe N+9,
  • the SC-FDMA symbol is reserved at the start position of the subframe N+10, that is, every other period T is temporally shifted forward by one subframe reserved symbol.
  • the example is only one implementation manner of the embodiment of the present invention, and may be different in practical applications, and should not be construed as limiting.
  • the preset offset delta can also be represented by a symbol. For example, if the preset offset delta is equal to +1 subframe, and 1 subframe contains N (N is a positive integer) symbols, then The preset offset delta may be represented as +N symbols.
  • the period of reserved symbols can be dynamic.
  • the symbol reservation period in the i-th uplink transport block is 2, and the symbol reservation period in the i+1th uplink transport block is 3; i is a positive integer.
  • the example is only one implementation manner of the embodiment of the present invention, and may be different in practical applications, and should not be construed as limiting.
  • the reserved at least one SC-FDMA symbol does not include: an SC-FDMA symbol at a start position of a first subframe of the uplink transport block; or SC-FDMA symbol at the end position of the last subframe of the uplink transport block.
  • different numbers of SC-FDMA symbols can be reserved correspondingly according to the access time required by different channel access schemes.
  • the embodiment of the present invention does not limit the number of reserved SC-FDMA symbols.
  • the number of SC-FDMA symbols that need to be reserved may be determined according to actual application requirements.
  • At least one SC-FDMA symbol may be reserved at a start position and/or an end position of a designated subframe of the uplink transport block.
  • the designated subframe is the first subframe of each uplink transport block (subframe N+4 in the figure).
  • the example is only one implementation of the embodiment of the present invention.
  • the designated subframe may also be other subframes in the uplink transport block, and should not be limited.
  • the SC-FDMA symbol is reserved only at the end of the designated subframe; or, if The designated subframe is the last subframe of the uplink transport block, and the SC-FDMA symbol is reserved only at the beginning of the designated subframe.
  • different numbers of SC-FDMA symbols can be reserved correspondingly according to the access time required by different channel access schemes.
  • the embodiment of the present invention does not limit the number of reserved SC-FDMA symbols.
  • the number of SC-FDMA symbols that need to be reserved may be determined according to actual application requirements.
  • the actual application may reserve the at least one inside the subframe (not the start position and the end position of the subframe).
  • SC-FDMA symbols are not limited here.
  • the Wi-Fi and the LAA coexist, and in order to avoid mutual interference, the access mechanism that first listens to the LBT is used to access the channel.
  • the LBT mechanism between the two can be as shown in Figure 4.
  • the Wi-Fi AP considers that the channel is in a busy state if it detects that the energy of the entire channel exceeds a preset threshold.
  • the user equipment of the LAA-LTE cannot be successfully connected by using the LBT to access the idle channel on the reserved at least one SC-FDMA symbol by the access point (AP).
  • the at least one SC-FDMA symbol may be a low power transmission symbol.
  • Part of the frequency resource on the low power transmission symbol involved in the embodiment of the present invention is allowed to be occupied.
  • the user equipment can access the channel by listening to the LBT access mechanism, and the access mode can be referred to as narrowband access of the LBT.
  • the Wi-Fi AP It can be understood that, since some resources on the low-power transmission symbol are allowed to be occupied, the energy of the entire channel on the low-power transmission symbol is likely to exceed the preset threshold, so that the Wi-Fi AP It is determined that the entire channel is in a busy state and does not occupy the low power transmission symbol. In this way, on the reserved at least one low-power transmission symbol, other UEs can discover that part of the channel (unoccupied frequency band) is in an idle state through sub-band detection, and thus can access the idle state through the LBT. Part of the channel.
  • the low-power transmission symbol may be configured as a specified attribute (for example, a Cell Specific attribute) by using high-layer signaling, such as Radio Resource Control (RRC) signaling, so that the intra-cell is configured.
  • RRC Radio Resource Control
  • the UE is each capable of using the portion of the frequency resources allowed to be occupied on the low power transmission symbol.
  • the frequency characteristics of the low power transmission symbols are required to satisfy the following constraints: the low power transmission
  • the frequency allowed to be occupied on the symbol needs to span 80% of the entire bandwidth, that is, the frequency difference between the highest frequency occupied and the lowest frequency occupied is 80% of the entire bandwidth.
  • the frequency that is allowed to be occupied on the low-power transmission symbol may be used by a single user equipment, or may be multiplexed by multiple user equipments, which is not limited herein.
  • the frequency allowed on the low power transmission symbol may be distributed in resource blocks at both ends of the entire system bandwidth.
  • resource blocks at both ends of the entire system bandwidth may be allowed to be occupied, and resource blocks that are not allowed to be occupied in the middle are reserved for use by the LAA user equipment as LBT-based narrowband access.
  • the example is only one implementation manner of the embodiment of the present invention.
  • the frequency allowed to be occupied on the low-power transmission symbol may also be other distribution manners, as long as the ETSI setting is satisfied with respect to the low-power transmission symbol.
  • the frequency characteristics can be specified.
  • the reserved at least one SC-FDMA symbol may appear at a start position of a subframe of an uplink transport block or an end position of a subframe or an inside of a subframe; the reserved at least one SC
  • the number of the -FDMA symbols may be specifically determined according to the access scheme; the type of the at least one SC-FDMA symbol reserved may be a blank symbol (ie, the entire channel is idle in the symbol), or may be low power.
  • the transmitted symbol ie, part of the frequency resource on the symbol is allowed to be occupied); the reserved at least one SC-FDMA symbol may periodically appear in a partial subframe.
  • the reserved at least one SC-FDMA symbol may be configured by using a high-level configuration signaling (such as RRC signaling), a physical downlink control channel (PDCCH), or the like, and specifically includes at least one of the following: The number of the reserved SC-FDMA symbols, the position of the reserved SC-FDMA symbol in the subframe, the type of the reserved SC-FDMA symbol, and the reserved The period of the SC-FDMA symbol and the offset.
  • a high-level configuration signaling such as RRC signaling
  • PDCCH physical downlink control channel
  • the reserved at least one SC-FDMA symbol may appear in each subframe of the uplink transport block, or periodically appear in a partial subframe, or appear in a specified subframe.
  • the subframe that includes the reserved SC-FDMA symbol may be configured by using a high-level configuration signaling (for example, RRC signaling), a physical downlink control channel (PDCCH), or the like, and specifically includes at least one of the following Item: a number of subframes including the reserved SC-FDMA symbol, a position of the subframe including the reserved SC-FDMA symbol in an uplink transport block, and the reserved SC- The period of the sub-frame of the FDMA symbol and the offset.
  • a high-level configuration signaling for example, RRC signaling
  • PDCCH physical downlink control channel
  • Embodiments of the present invention by reserving at least one SC-FDMA symbol in a subframe of an uplink transport block, wherein, on the reserved at least one SC-FDMA symbol, the user equipment may
  • the LBT access mechanism access channel can be implemented in the uplink transport block for other
  • the UE reserves the time gap of accessing the channel through the LBT, and improves the probability that other UEs successfully access the channel, so that multiple user equipments in the LAA communication system can perform uplink multiplexing.
  • an embodiment of the present invention provides a communication network device 100 (shown in FIG. 6) for implementing the method described in the foregoing embodiments of FIGS. 3A-3C.
  • the communication network device 100 can include a memory 1002 and a processor 1001, a transmitter 1003, and a receiver 1004 coupled to the memory 1002, wherein the transmitter 1003 is configured to transmit data to an external device; the receiver 1004 is configured to receive The data transmitted by the external device; the memory 1002 is used to store the implementation code of the method described in the foregoing embodiment, and the processor 1001 is configured to execute the program code stored in the memory 1002, namely:
  • At least one SC-FDMA symbol is reserved in a subframe of the uplink transport block corresponding to the transport block; wherein the at least one SC-FDMA is reserved In the symbol, the user equipment accesses the channel by listening to the LBT access mechanism.
  • the processor 1001 is configured to: reserve at least one SC-FDMA symbol at a start position and/or an end position of each subframe of the uplink transport block. In this way, a time gap through the LBT access channel is reserved for other UEs at the start and/or end positions of each subframe, so that uplink multiplexing of multiple UEs can be achieved.
  • the processor 1001 is configured to: periodically reserve at least one SC-FDMA symbol at a start position and/or an end position of a partial subframe of the uplink transport block. In this way, the time gap through the LBT access channel is reserved for other UEs at the beginning and/or the end position of the partial subframe of the uplink transport block periodically, so that uplink multiplexing of multiple UEs can be implemented.
  • the processor 1001 is configured to reserve at least one SC-FDMA symbol at a start position and/or an end position of a designated subframe of the uplink transport block.
  • the at least one SC-FDMA symbol can be a low power transmit symbol. Part of the frequency resource on the low power transmission symbol involved in the embodiment of the present invention is allowed to be occupied. Moreover, on the unoccupied frequency resource of the ABS symbol, the user equipment can access the channel by listening to the LBT access mechanism. In this way, the WiFi access point can be prevented from accessing the idle channel through the LBT on the reserved at least one SC-FDMA symbol, thereby causing the LAA-LTE user equipment not to Can successfully access the channel (or reduce the successful access probability of LAA-LTE user equipment).
  • the frequencies allowed to be occupied on the low power transmission symbols may be distributed in resource blocks at both ends of the entire system bandwidth.
  • the processor 1001 may be further configured to: configure, by using a high-level configuration signaling, such as RRC signaling, a physical downlink control channel (PDCCH), or the like, to configure the reserved at least one SC-FDMA symbol, specifically
  • the method includes at least one of: a number of the reserved SC-FDMA symbols, a position of the reserved SC-FDMA symbol in a subframe, a type of the reserved SC-FDMA symbol, The period of the reserved SC-FDMA symbol and the offset.
  • the processor 1001 may be further configured to: configure, by using a high-level configuration signaling, such as RRC signaling, a physical downlink control channel (PDCCH), or the like, to configure a subframe including the reserved SC-FDMA symbol.
  • a high-level configuration signaling such as RRC signaling, a physical downlink control channel (PDCCH), or the like.
  • the method includes at least one of: a number of subframes including the reserved SC-FDMA symbol, a location of the subframe including the reserved SC-FDMA symbol in an uplink transport block, and the The period of the subframe of the reserved SC-FDMA symbol and the offset.
  • execution steps of the processor 1001 may also refer to the methods described in the foregoing embodiments of FIG. 3A-3C, and details are not described herein again.
  • an embodiment of the present invention further provides a communication network device, the communication network device comprising a functional module for performing the method described in the foregoing embodiments of Figures 3A-3C.
  • embodiments of the present invention can be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware. Moreover, the invention can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage and optical storage, etc.) including computer usable program code.
  • the present invention is directed to a method, apparatus (system), and computer program according to an embodiment of the present invention.
  • the flow chart and/or block diagram of the product is described. It will be understood that each flow and/or block of the flowchart illustrations and/or FIG.
  • These computer program instructions can be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing device to produce a machine for the execution of instructions for execution by a processor of a computer or other programmable data processing device.
  • the computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device.
  • the apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.
  • These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device.
  • the instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

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  • General Physics & Mathematics (AREA)
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  • Quality & Reliability (AREA)
  • Mobile Radio Communication Systems (AREA)
PCT/CN2016/081001 2016-05-04 2016-05-04 一种基于授权辅助接入laa系统的上行传输方法及装置 WO2017190294A1 (zh)

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RU2018141587A RU2696089C1 (ru) 2016-05-04 2016-05-04 Способ восходящей передачи, основанный на системе лицензированной поддержки доступа, laa, и устройство
JP2018557890A JP2019515569A (ja) 2016-05-04 2016-05-04 ライセンス補助アクセスｌａａシステムに基づくアップリンク送信方法、および装置
PCT/CN2016/081001 WO2017190294A1 (zh) 2016-05-04 2016-05-04 一种基于授权辅助接入laa系统的上行传输方法及装置
KR1020187034534A KR20190002625A (ko) 2016-05-04 2016-05-04 면허 지원 액세스 ｌａａ 시스템에 기초한 업링크 전송 방법 및 장치
CA3023180A CA3023180A1 (en) 2016-05-04 2016-05-04 Uplink transmission method based on licensed-assisted access laa system, and apparatus
EP16900816.6A EP3445079B1 (en) 2016-05-04 2016-05-04 Uplink transmission method and device based on licensed-assisted access (laa) system
CN201680085355.2A CN109076350B (zh) 2016-05-04 2016-05-04 一种基于授权辅助接入laa系统的上行传输方法及装置
AU2016405421A AU2016405421A1 (en) 2016-05-04 2016-05-04 Uplink transmission method and device based on licensed-assisted access (LAA) system
US16/099,001 US11071142B2 (en) 2016-05-04 2016-05-04 Uplink transmission method based on licensed-assisted access LAA system, and apparatus
BR112018072710A BR112018072710A2 (pt) 2016-05-04 2016-05-04 método de transmissão de enlace ascendente baseado em sistema de acesso assistido licenciado laa, aparelho e meio de armazenamento legível por computador

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CN109076350B (zh) 2021-10-01
US11071142B2 (en) 2021-07-20
JP2019515569A (ja) 2019-06-06
EP3445079A1 (en) 2019-02-20
EP3445079A4 (en) 2019-03-27
US20190159252A1 (en) 2019-05-23
CA3023180A1 (en) 2017-11-09
BR112018072710A2 (pt) 2019-02-19
KR20190002625A (ko) 2019-01-08
EP3445079B1 (en) 2020-12-09
RU2696089C1 (ru) 2019-07-31
AU2016405421A1 (en) 2018-11-29

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